CPP

Appending a vector to a vector in C++

Input:
    vector<int> v1{ 10, 20, 30, 40, 50 };
    vector<int> v2{ 100, 200, 300, 400 };

    //appending elements of vector v2 to vector v1
    v1.insert(v1.end(), v2.begin(), v2.end());

    Output:
    v1: 10 20 30 40 50 100 200 300 400
    v2: 100 200 300 400

adding elements to a vector C++

#include<vector>
#include<algorithm>

// all the  std and main syntax ofcourse.

vector<int> pack = {1,2,3} ;

// To add at the END
pack.push_back(6);       // {1,2,3,6}

//  OR
// To add at BEGGINING 
pack.insert(pack.begin(),6) 	// {6,1,2,3,}		

adding element in vector c++

vector_name.push_back(element_to_be_added);

inserting element in vector in C++

vector_name.insert (position, val)

c++ insert vector into vector

//Insert vector b at the end of vector a
a.insert(std::end(a), std::begin(b), std::end(b));